Ask An Astronomer Answer Archive
- What would happen if I put my arm out in space without a space suit?
- If your skin was exposed in space and you bled would your blood be blue from lack of oxygen?
- How long would it take us to travel to Alpha Centauri?
- Why can't we go faster than the speed of light? Can we ever colonize other planets?
- What are some major challenges of human space exploration?
- What happens to "dead" satellites orbiting the Earth?
- What kind of damage do solar storms cause to satellites?